Like expected expected ATI's partners have started launching X1800 XT cards with higher clockspeeds. Asus has presented their EAX1800XT TOP which is clocked slightly higher than the original card with a core of 650MHz and 1.55GHz memory.
The product features changed cooling, featuring an Artic Cooling design with the classical fan instead of a turbine offered on the reference cards. At first glance, this cooler is a dead-ringer of cooling used on GeForce 6800 Ultra products, and since we have seen enthusiasts putting Nvidia GeForce6/7 cooling stuff on X1800 products, we would not have been surprised if that's the case. What separates this board from other solutions is something new in the single GPU world - Asus packs an external power supply to ensure rock solid operation. First seen with its Dual 7800GT board, it seems that Asus will be using external PSU on lot of their TOP products, ensuring maximum overclockability.More info over here.